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<p>[QUOTE=&quot;calcol, post: 13842450, member: 77639&quot;]So, what’s the exotic reader?&nbsp; It’s my phone!&nbsp;&nbsp; Most advanced smart phones have a NFC reader (mine’s a Samsung A53).&nbsp; To see if yours has it, check the specs under settings, or if it has it, you should see an on/off option under settings (turn it on).&nbsp; The other thing to do is find out where on your phone the NFC sensor is located because it should be placed near the slab NFC sensor for best communication.&nbsp; Look in the manual (should have one in your phone) or look online.&nbsp; Mine is near the camera lenses.&nbsp; Finally, install the PCGS Cert Verification app (it’s free).</p><p><br /></p><p>All slabs currently produced by PCGS have a NFC chip unique to each slab.&nbsp; When the reader (phone in this case) communicates between the slab and the PCGS server, the slab sends its ID.&nbsp; Then the server sends an encrypted message that only that a specific, authentic chip can decrypt.&nbsp; Once the message is decrypted by the chip, it will send back a message that only the authentic chip could send, and it will be encrypted in a way that only the PCGS server can decrypt.&nbsp; The encrypted messages will change with every communication.&nbsp; This exchange verifies the slab as authentic, and the server will send info on the coin for the user to read.</p><p><br /></p><p>I chose as an example a 1906 French 10 franc gold coin that had been recently slabbed.&nbsp; The first pic shows the slab and the location of its sensor and the PCGS Cert app on the phone.&nbsp; In the second pic, the phone sensor is on top of the slab sensor and scanning has begun.&nbsp; In the third pic, the user is asked which app is to do the final scan; choose the PCGS app, of course!&nbsp; The last pic shows the slab was verified and info on the coin plus a pic was sent back.&nbsp; I blacked-out some of the info for confidentially reasons.</p><p><br /></p><p>The most important reason to have chipped slabs is to discourage slab counterfeiting.&nbsp; But as you can see, the verification app is a great way to get extensive info on a coin and can assist in inventory, creating a photo collection, etc.&nbsp; With the right kind of reader, NFC can also be used for theft prevention at shows, in coin shops, etc.&nbsp;&nbsp; It’s been a great move by PCGS, and hopefully, NGC will soon follow suit.</p><p><br /></p><p>Cal</p><p>[ATTACH=full]1530541[/ATTACH]</p><p><br /></p><p>[ATTACH=full]1530543[/ATTACH]</p><p>&nbsp;</p><p>[ATTACH=full]1530544[/ATTACH]</p><p><br /></p><p>[ATTACH=full]1530545[/ATTACH][/QUOTE]</p><p><br /></p>

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